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Previous studies indicated that PPM usually showed homogeneous enhancement on enhanced CT and high uptake of <jats:sup>18<\/jats:sup>F-fluorodeoxyglucose (<jats:sup>18<\/jats:sup>F-FDG) on positron emission tomography\/CT (PET\/CT). In this study, we report a case of PPM with atypical enhanced CT and <jats:sup>18<\/jats:sup>F-FDG PET\/CT features in a patient with rectal carcinoma.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Case presentation<\/jats:title>\n                <jats:p>A 70-year-old male was demonstrated to have rectal carcinoma by biopsy while a solitary pulmonary nodule (SPN) with well-defined edges measuring 13\u2009\u00d7\u200913\u2009\u00d7\u200915\u2009mm was almost simultaneously found in the right lower robe on chest CT scan. Contrast-enhanced CT and PET\/CT revealed mild centripetal enhancement of the nodule without accumulation of <jats:sup>18<\/jats:sup>F-FDG. A thoracoscopic wedge resection of the right lower lobe was finally performed and histopathologic examinations and PET\/CT imaging showed that the nodule was a PPM.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>PPM is a rare disease with heterogeneity not only in blood supply but also in glucose metabolism. <jats:sup>18<\/jats:sup>F-FDG PET\/CT may be an effective method for differentiating benign and malignant SPNs. The diagnosis of PPM depends on pathological and radiological examinations.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s13019-021-01546-3","type":"journal-article","created":{"date-parts":[[2021,7,6]],"date-time":"2021-07-06T09:04:02Z","timestamp":1625562242000},"update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["A case report of primary pulmonary meningioma masquerading as lung metastasis in a patient with rectal carcinoma: role of 18F-FDG PET\/CT"],"prefix":"10.1186","volume":"16","author":[{"given":"Maoqing","family":"Jiang","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ping","family":"Chen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rong","family":"Huang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jingfeng","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jianjun","family":"Zheng","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2021,5,29]]},"reference":[{"issue":"462","key":"1546_CR1","doi-asserted-by":"publisher","first-page":"481","DOI":"10.1007\/s00428-013-1383-7","volume":"462","author":"C Weber","year":"2013","unstructured":"Weber C, Pautex S, Zulian GB, Pusztaszeri M, Lobrinus JA. 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